Cortexin Injection · Cortexin, a low-molecular-weight polypeptide complex from cerebral cortex (1,000 to 10,000 Da fractions)
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Each box: 5mg lyophilisate x10 vials · clinician-administered injection course
Complete the stack
−10% with crypto · ships from a CIS network, 2 to 4 weeks tracked · $45 shipping, free over $200
Before you buy
Original sealed manufacturer product, vials, ampoules or sealed nasal units depending on the compound. The registered brand, never repacked into a house brand.
Tracked from a CIS pharmacy network, typically 2 to 4 weeks. If customs formally seizes it, you get a full refund in the crypto you paid, or a reship. File within 24 hours of the seizure and a copy of the seizure notice is all we need. Transit delays are outside our control and are not on their own grounds for a refund.
Card processors ban this category, so crypto is the only rail. You get 10% off for using it, and no card data sits on a grey-market server.
We do not hold an independent lab certificate, so we do not claim one. It ships in original sealed manufacturer packaging, the registered product, never repacked. What you can verify is the brand on the unit and whether it arrives.
Compound spec
Cortexin is a complex of low-molecular-weight water-soluble polypeptides (roughly 1,000 to 10,000 Da) extracted from cerebral cortex. The proposed rationale is tissue specificity: instead of one synthetic agonist, you deliver a mixture of neuropeptides studied for neurotrophic signaling, antioxidant defense, and balancing excitatory and inhibitory neurotransmission. In a 2021 PLoS One rat model of brain ischemia, Cortexin reduced necrosis size and supported recovery of neurological function at low doses, comparable to Cerebrolysin. That is animal and patient data. Direct evidence in healthy young adults is limited, which is the honest caveat to hold alongside the mechanism.
Biological extract. Effect depends on the integrity of the source product, which is the entire reason to buy the original.
Studied for neuroprotection and functional recovery in acute and chronic brain ischemia, in both patient trials and animal models.
Investigated as an adjunct in traumatic brain injury and post-stroke cognitive impairment.
Used in pediatric developmental indications and as an adjunct in epilepsy within its approved markets.
Reported antioxidant activity and modulation of the balance between excitatory and inhibitory neurotransmission.
Delivered as a tissue-specific peptide complex rather than a single synthetic agonist, which is the stated rationale for its profile.
Cortexin is a biological extract, not a synthesized molecule. Consistency depends entirely on the manufacturer. You get the Geropharm product through a licensed pharmacy chain, not a vial filled by an anonymous peptide vendor.
Clinical use is 10mg IM once daily for 10 days, sometimes repeated. This is a protocol with a start and an end, administered or supervised by a clinician, not an open-ended daily nootropic.
The strongest human data sits in patients: ischemic stroke, traumatic brain injury, and pediatric developmental indications. Evidence in healthy high-performers is limited. We lead with what is studied, not with what we wish were true.
1,000-10,000
Daltons
Molecular-weight range of the water-soluble polypeptide fractions
10
Day course
Standard IM protocol at 10mg once daily
272
Patients
Enrolled in a multicenter placebo-controlled acute ischemic stroke trial (2014)
~45%
Necrosis reduction
In an acute-ischemia rat model versus control (PLoS One, 2021)
Clinical Science
This is the original formulation as registered and sold in its home market, not a Western relabel or a powder repack. The mechanism is drawn from the published literature, not from us.
Ground Truth
The shelf the biohacking crowd imports one bottle at a time. Logged, dosed, and compared in the communities that actually track this stuff.
The molecule is the same as the brand-name competitor and the rest of the offshore field. What separates us is the operational layer: a cash refund in the crypto you paid if customs seizes your order, a customs reship where you cover the postage, discreet pack-out, and direct-source margin we pass through as the crypto discount.
| Razumna (Geropharm original) | Grey-market peptide vendor | Local prescription / clinic | |
|---|---|---|---|
| Source product | Sealed Geropharm lyophilisate, licensed CIS pharmacy chain | Anonymous vials, unverifiable origin, often counterfeit | Geropharm or licensed equivalent |
| Assay and consistency | Manufacturer-assayed biological extract | No assay, batch-to-batch unknown for a biological | Pharmacy-grade |
| Access without a script | Yes | Yes | No, requires a prescription in most Western countries |
| What you pay for | The real product and its handling | A gamble at a lower price | Markup plus appointment cost |
| Honest about evidence | Yes, patient data strong, healthy-subject data thin | Sells it as a clean cognitive enhancer | Prescribes for approved indications only |
Cortexin Injection · 3 Boxes
$215 / 3 boxes
Pay in crypto: $193.50 save $22Cortexin is a Russian polypeptide complex extracted from cattle and pig cerebral cortex, run as a short neuroprotective and nootropic course for brain fog, cognitive recovery, and post-concussion or post-stroke rehab in its home market. It has no Western approval and no large trials behind it, so treat it as off-label. This 5mg vial is the lighter strength; the standard adult course is built around 10mg per day.
Standard adult dose is 10mg intramuscular once daily, which is 2 of these 5mg vials reconstituted in 1 to 2ml of saline, water for injection, or 0.5% procaine. A single 5mg vial is a lighter option if you want to start conservative. Inject in the morning, since it can be mildly activating, and use sterile technique.
Run it as a 10-day course, one injection daily, then stop. This is a course compound, not a daily background one, so there is nothing to taper. Repeat courses are typically spaced 3 to 6 months apart.
Cortexin Injection · 3 Boxes
$215 / 3 boxes
Pay in crypto: $193.50 save $22Cortexin is a biological extract from cerebral cortex tissue, not a synthesized molecule with a single verifiable structure. Its profile depends on how it was extracted, fractionated, and stabilized. An anonymous grey-market vial can contain anything. The buy-reason here is the sealed, assayed Geropharm product, the same logic that applies to Cerebrolysin.
The honest answer is that the strong evidence is in patients with stroke, brain injury, and cognitive disorders, plus pediatric developmental indications. Data in healthy young high-performers is thin. People use it off-label for cognitive support, but we are not going to claim an effect the research does not support.
Both are cortex-derived peptide preparations with overlapping neuroprotective rationale, and head-to-head studies have found them broadly comparable. Cortexin is a shorter, simpler 10-day course at low milligram doses; Cerebrolysin courses use much larger volumes. The choice usually comes down to protocol preference and clinician guidance, not one being categorically superior.
It is designed to be administered or supervised by a clinician. It requires reconstitution and intramuscular injection with sterile technique. If you are not trained to inject, you should not be doing this unsupervised.
No. These are original products registered and sold in their home markets (largely Russia and the CIS), shipped for personal use. Most are not FDA-approved and several are not sold through US pharmacies at all. You are sourcing the originals directly, which is the point.
Dispatched from a licensed CIS pharmacy network, direct to you, with no supplier branding on the parcel. Tracked international, typically 2 to 4 weeks depending on customs. There is a 10-unit-per-order limit on this lane, a customs constraint on the origin side.
Flat $45 on orders under $200, free over $200. The flat rate reflects real tracked-international postage on a low-volume lane. Bundling your order past $200 removes it.
Same policy as the rest of Razumna. The remedy is triggered by a confirmed customs seizure, meaning customs formally takes the parcel and issues a seizure notice. You then choose a full refund in the crypto you paid, or a reship where you cover the postage. You must file the claim within 24 hours of the seizure, and a copy of the seizure notice is all we need. A parcel that is just slow or held pending clearance has not been seized; long transit and customs delays are outside our control and are not on their own grounds for a refund.
Crypto only, 12 coins: BTC, ETH, USDT, USDC, LTC, BCH, XMR, SOL, BNB, MATIC, DOGE, and AVAX. The 10% discount is baked into the pricing. No cards, by design.
Read before you order
This product is a clinician-administered injection course. It requires sterile reconstitution and/or intramuscular technique. We do not provide medical supervision. Do not order it expecting an oral supplement, and do not self-inject without the training to do so safely.
We would rather lose the order than have you buy this blind. If any of the above is a dealbreaker, close the tab. This is not medical advice.
Crypto = 10% off. Free shipping over $200. Cash refund if your order doesn’t arrive.
Back to add-to-cart ↑Guides & research
Independent write-ups on Cortexin Injection and how it is used. No hype, sourced.
Nootropics
Cortexin: The Sealed Geropharm Original, and Why That Phrase Matters
Comparison
Cerebrolysin vs Cortexin: Two Injectable Neuropeptide Courses Compared
Peptides
Epitalon (Endoluten): The Telomerase Peptide, and What Is Actually Proven
Peptides
Pinealon: The Longevity Peptide People Run Quietly, and What Is Actually Known
Nootropics
Cerebrolysin: What It Is, How the Course Works, and Why the Source Matters
Nootropics
Russian Nootropics, Explained: Where They Come From and Why the Source Matters